Linking Hydrogen (delta H-2) Isotopes in Feathers and Precipitation: Sources of Variance and Consequences for Assignment to Isoscapes
Background: Tracking small migrant organisms worldwide has been hampered by technological and recovery limitations and sampling bias inherent in exogenous markers. Naturally occurring stable isotopes of H (delta H-2) in feathers provide an alternative intrinsic marker of animal origin due to the predictable spatial linkage to underlying hydrologically driven flow of H isotopes into foodwebs. This